Journal of Research in Dental
and Maxillofacial Sciences
Volume 11, Issue 1 (3-2026)
J Res Dent Maxillofac Sci 2026, 11(1): 22-30 |
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Roshani F, Jabarifard K, Babaei N, Hekmatfar S. Effect of Different Irrigating Solutions on Pushout Bond Strength of Composite Posts in Primary Teeth: An In Vitro Study. J Res Dent Maxillofac Sci 2026; 11 (1) :22-30
URL: http://jrdms.dentaliau.ac.ir/article-1-986-en.html
URL: http://jrdms.dentaliau.ac.ir/article-1-986-en.html
1- Dental Faculty, Ardabil University of Medical Sciences, Ardabil, Iran
2- Dentist in Private Practice, Ardabil, Iran
3- Department of Pediatric Dentistry, School of Dentistry, Ardabil University of Medical Sciences, Ardabil, Iran ,hekmatfar24@gmail.com
2- Dentist in Private Practice, Ardabil, Iran
3- Department of Pediatric Dentistry, School of Dentistry, Ardabil University of Medical Sciences, Ardabil, Iran ,
Abstract: (237 Views)
Background and Aim: Restoration of anterior teeth is challenging in pediatric dentistry due to the poor retention of restorative material and the small size of the teeth. This study was conducted to investigate the pushout strength (PBS) of intra-canal composite posts in primary anterior teeth after using different root canal irrigants.
Materials and Methods: In this in vitro experimental study, 44 extracted primary anterior teeth were randomly assigned to four groups of (I) sodium hypochlorite (NaOCl), (II) ethylenediaminetetraacetic acid (EDTA), (III) saline, and (IV) chlorhexidine (CHX). Tooth crowns were cut by a high-speed handpiece 1 mm above the cementoenamel junction. After cleaning and shaping, the root canals were obturated, and post spaces were prepared. Composite resin was packed in the 3 mm coronal third of the canal. The teeth were thermocycled, and each tooth was sectioned into 1 mm slices at the mid-root. Next, the specimens were subjected to PBS testing. The mode of failure was determined under a stereomicroscope at ×40 magnification. Data were analyzed using one-way ANOVA and Games-Howell test (alpha=0.05).
Results: Saline showed the lowest (1.09±0.36 MPa), and NaOCl exhibited the highest (8.57±0.15 MPa) PBS (P<0.001). The difference in PBS between the EDTA and CHX groups was not statistically significant (P=0.115). Adhesive failure was more frequent than other failure modes.
Conclusion: The results showed that root canal pretreatment with NaOCl enhanced the PBS of composite posts in primary anterior teeth.
Materials and Methods: In this in vitro experimental study, 44 extracted primary anterior teeth were randomly assigned to four groups of (I) sodium hypochlorite (NaOCl), (II) ethylenediaminetetraacetic acid (EDTA), (III) saline, and (IV) chlorhexidine (CHX). Tooth crowns were cut by a high-speed handpiece 1 mm above the cementoenamel junction. After cleaning and shaping, the root canals were obturated, and post spaces were prepared. Composite resin was packed in the 3 mm coronal third of the canal. The teeth were thermocycled, and each tooth was sectioned into 1 mm slices at the mid-root. Next, the specimens were subjected to PBS testing. The mode of failure was determined under a stereomicroscope at ×40 magnification. Data were analyzed using one-way ANOVA and Games-Howell test (alpha=0.05).
Results: Saline showed the lowest (1.09±0.36 MPa), and NaOCl exhibited the highest (8.57±0.15 MPa) PBS (P<0.001). The difference in PBS between the EDTA and CHX groups was not statistically significant (P=0.115). Adhesive failure was more frequent than other failure modes.
Conclusion: The results showed that root canal pretreatment with NaOCl enhanced the PBS of composite posts in primary anterior teeth.
Type of Study: Original article |
Subject:
pediatric
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